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Physics
In fog, photographs of the objects taken with infra-red radiations are more clear than those obtained during visible light because
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Q. In fog, photographs of the objects taken with infra-red radiations are more clear than those obtained during visible light because
KCET
KCET 2009
Ray Optics and Optical Instruments
A
scattering of l-R light is more than visible light
23%
B
the intensity of I-R light from the object is less
12%
C
scattering of l-R light is less than visible light
52%
D
l-R radiation has lesser wavelength than visible radiation
13%
Solution:
In fog, visible light is scattered more according to Rayleigh scattering, but scattering of infrared radiations is less due to high wavelengths, hence in fog, photographs of the objects taken with infrared radiations are more clear.